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Andritz - Model A -Decanter Centrifuges
The ANDRITZ decanter centrifuge A is a robust, modular solid-bowl centrifuge engineered to deliver reliable, flexible, and safe solid-liquid separation across a wide range of industrial processes. Using advanced centrifugal force, it provides outstanding performance under demanding conditions while keeping operating costs low. Designed for long service life and minimal maintenance, it offers proven efficiency in clarification of liquids, thickening of sludges, and separation of solids.
Built on a modular platform, these decanter centrifuges combine a precision-engineered rotating bowl with a high-performance scroll conveyor to ensure continuous, stable separation. By controlling differential speed between the conveyor and bowl, the system adapts to variations in feed composition, delivering excellent separation efficiency even with high solids content. Its compact design and durable construction make it a reliable solution for industrial operators looking to optimize throughput and reduce environmental impact.
The A-series maintains consistent separation results even when feed volume, conditions, or product characteristics fluctuate. Its robust solid-bowl design, low-vibration operation, and precise differential speed control support uptime and equipment reliability, minimizing process interruptions in continuous duty.
Modular design for a perfect fitStarting from a strong base machine, the decanter can be configured with application-specific features to match clarification, thickening, dewatering, liquid–liquid, and classifying duties. This modularity enables custom engineering solutions that scale as requirements evolve—streamlining commissioning while improving process optimization across lines.
Safety and compliance for hazardous applicationsFor solvent-rich or potentially explosive atmospheres, the A-series offers gas-tight, vapor-tight and pressurized designs, with configurations suitable for ATEX Zone 1/2 environments. This safeguards people and assets while preserving throughput and separation performance—key to operational efficiency in high-risk settings.
High-efficiency solid-liquid separation
Optimized bowl and conveyor geometries generate high G-forces for sharp separation cuts and excellent centrate/filtrate quality. By stabilizing solids capture and dryness, the A-series reduces downstream load and helps plants meet stringent product and effluent specifications.
Energy-saving and low operating costs
Decanter-based sedimentation minimizes consumables compared with filtration-based methods, supporting lower OPEX and sustainable waste management practices. Energy-efficiency innovations – such as optional TurboJet weir plates that recover kinetic energy from the clarified liquid – can further reduce power demand.
Compact design with high throughput
The self-contained, compact layout eases integration into existing lines and supports high specific throughput. Plants benefit from reduced peripheral equipment, simplified utilities, and a smaller footprint – all contributors to measurable operational efficiency gains.
Process flexibility
- Constant separation results, even at fluctuations in the volumetric flow, the process conditions, or the product characteristics.
Process conditions
- Gas-tight, vapor-tight, or pressurized operation
- Low vibration levels
- Absolute pressures from 0 to 6 bar, -90° C to +180° C
- CIP cleaning
- Flameproof or explosion-proof standards making the decanter ideal for applications with solvents and hazardous materials
Chemical resistance
- Materials such as titanium, pure nickel, or Hastelloy provide the security essential in demanding process applications.